def test_transaction_chain_when_duplicate_rewards(clone_blockchain):
reward_1 = Transaction.generate_reward_transaction(
Wallet()).serialize_to_json()
reward_2 = Transaction.generate_reward_transaction(
Wallet()).serialize_to_json()
clone_blockchain.add_block([reward_1, reward_2])
with pytest.raises(Exception,
match="There can only be one mining reward per block."):
Blockchain.is_tx_chain_valid(clone_blockchain.chain)
def test_block_reward_tx_when_invalid_reward_amt():
wallet = Wallet()
reward_tx = Transaction.generate_reward_transaction(wallet)
reward_tx.output[wallet.address] = 100000
with pytest.raises(Exception, match="Invalid block reward transaction."):
Transaction.is_tx_valid(reward_tx)
def mine_block_route():
"""
Mine blocks on the shared chain. If given wallet is first to validate a given block,
`prospective_mining_reward` will be allocated into given wallet UTXO. Else, the reward
transaction will be void.
"""
# serialize all Tx
tx_data = transaction_pool.serialize_to_json()
# generate, serialize mining reward transaction obj
prospective_mining_reward = Transaction.generate_reward_transaction(wallet).serialize_to_json()
# append reward Tx and submit
tx_data.append(prospective_mining_reward)
blockchain.add_block(tx_data)
block = blockchain.chain[-1]
pubsub.broadcast_block(block)
transaction_pool.purge(blockchain)
return jsonify(block.serialize_to_json())
def test_block_reward_tx_when_valid_tx():
reward_tx = Transaction.generate_reward_transaction(Wallet())
Transaction.is_tx_valid(reward_tx)
def test_block_reward_tx():
wallet = Wallet()
transaction = Transaction.generate_reward_transaction(wallet)
assert transaction.input == MINING_REWARD_INPUT
assert transaction.output[wallet.address] == MINING_REWARD
def test_block_reward_tx_when_exceeds_recipients():
reward_tx = Transaction.generate_reward_transaction(Wallet())
reward_tx.output["second_and_invalid_recipient"] = 100
with pytest.raises(Exception, match="Invalid block reward transaction."):
Transaction.is_tx_valid(reward_tx)
